{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell type", "DNA", "protein", "cell line", "RNA"], "input": "Cellular activation by thrombin led to a marked shift in the proportion of protein from the 27-kDa unphosphorylated form to the 29-kDa phosphoprotein species ."}
{"cell type": [], "DNA": [], "protein": ["thrombin", "27-kDa unphosphorylated form", "29-kDa phosphoprotein species"], "cell line": [], "RNA": []}